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@article{Aad:2020:10.1007/JHEP08(2020)051,
author = {Aad, G and Abbott, B and Abbott, DC and Abud, AA and Abeling, K and Abhayasinghe, DK and Abidi, SH and AbouZeid, OS and Abraham, NL and Abramowicz, H and Abreu, H and Abulaiti, Y and Acharya, BS and Achkar, B and Adam, L and Bourdarios, CA and Adamczyk, L and Adamek, L and Adelman, J and Adersberger, M and Adiguzel, A and Adorni, S and Adye, T and Affolder, AA and Afik, Y and Agapopoulou, C and Agaras, MN and Aggarwal, A and Agheorghiesei, C and Aguilar-Saavedra, JA and Ahmad, A and Ahmadov, F and Ahmed, WS and Ai, X and Aielli, G and Akatsuka, S and Akesson, TPA and Akilli, E and Akimov, A and Al, Khoury K and Alberghi, GL and Albert, J and Verzini, MJA and Alderweireldt, S and Aleksa, M and Aleksandrov, IN and Alexa, C and Alexopoulos, T and Alfonsi, A and Alfonsi, F and Alhroob, M and Ali, B and Ali, S and Aliev, M and Alimonti, G and Allaire, C and Allbrooke, BMM and Allen, BW and Allport, PP and Aloisio, A and Alonso, F and Alpigiani, C and Alshehri, AA and Camelia, EA and Alvarez},
doi = {10.1007/JHEP08(2020)051},
journal = {The Journal of High Energy Physics},
pages = {1--67},
title = {Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at root s=8 TeV},
url = {http://dx.doi.org/10.1007/JHEP08(2020)051},
volume = {2020},
year = {2020}
}

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TY  - JOUR
AB  - The combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS collaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at a centre-of-mass energy of 8 TeV, and corresponding to an integrated luminosity of about 20 fb−1 for each experiment. The measurements used events containing one lepton and having different jet multiplicities in the final state. The results are quoted as fractions of W bosons with longitudinal (F0), left-handed (FL), or right-handed (FR) polarizations. The resulting combined measurements of the polarization fractions are F0 = 0.693 ± 0.014 and FL = 0.315 ± 0.011. The fraction FR is calculated from the unitarity constraint to be FR = −0.008 ± 0.007. These results are in agreement with the standard model predictions at next-to-next-to-leading order in perturbative quantum chromodynamics and represent an improvement in precision of 25 (29)% for F0 (FL) with respect to the most precise single measurement. A limit on anomalous right-handed vector (VR), and left- and right-handed tensor (gL, gR) tWb couplings is set while fixing all others to their standard model values. The allowed regions are [−0.11, 0.16] for VR, [−0.08, 0.05] for gL, and [−0.04, 0.02] for gR, at 95% confidence level. Limits on the corresponding Wilson coefficients are also derived.
AU  - Aad,G
AU  - Abbott,B
AU  - Abbott,DC
AU  - Abud,AA
AU  - Abeling,K
AU  - Abhayasinghe,DK
AU  - Abidi,SH
AU  - AbouZeid,OS
AU  - Abraham,NL
AU  - Abramowicz,H
AU  - Abreu,H
AU  - Abulaiti,Y
AU  - Acharya,BS
AU  - Achkar,B
AU  - Adam,L
AU  - Bourdarios,CA
AU  - Adamczyk,L
AU  - Adamek,L
AU  - Adelman,J
AU  - Adersberger,M
AU  - Adiguzel,A
AU  - Adorni,S
AU  - Adye,T
AU  - Affolder,AA
AU  - Afik,Y
AU  - Agapopoulou,C
AU  - Agaras,MN
AU  - Aggarwal,A
AU  - Agheorghiesei,C
AU  - Aguilar-Saavedra,JA
AU  - Ahmad,A
AU  - Ahmadov,F
AU  - Ahmed,WS
AU  - Ai,X
AU  - Aielli,G
AU  - Akatsuka,S
AU  - Akesson,TPA
AU  - Akilli,E
AU  - Akimov,A
AU  - Al,Khoury K
AU  - Alberghi,GL
AU  - Albert,J
AU  - Verzini,MJA
AU  - Alderweireldt,S
AU  - Aleksa,M
AU  - Aleksandrov,IN
AU  - Alexa,C
AU  - Alexopoulos,T
AU  - Alfonsi,A
AU  - Alfonsi,F
AU  - Alhroob,M
AU  - Ali,B
AU  - Ali,S
AU  - Aliev,M
AU  - Alimonti,G
AU  - Allaire,C
AU  - Allbrooke,BMM
AU  - Allen,BW
AU  - Allport,PP
AU  - Aloisio,A
AU  - Alonso,F
AU  - Alpigiani,C
AU  - Alshehri,AA
AU  - Camelia,EA
AU  - Alvarez,Estevez M
AU  - Alviggi,MG
AU  - Amaral,Coutinho Y
AU  - Ambler,A
AU  - Ambroz,L
AU  - Amelung,C
AU  - Amidei,D
AU  - Amor,Dos Santos SP
AU  - Amoroso,S
AU  - Amrouche,CS
AU  - An,F
AU  - Anastopoulos,C
AU  - Andari,N
AU  - Andeen,T
AU  - Anders,CF
AU  - Anders,JK
AU  - Andrean,SY
AU  - Andreazza,A
AU  - Andrei,V
AU  - Anelli,CR
AU  - Angelidakis,S
AU  - Angerami,A
AU  - Anisenkov,A
AU  - Annovi,A
AU  - Antel,C
AU  - Anthony,MT
AU  - Antipov,E
AU  - Antonelli,M
AU  - Antrim,DJA
AU  - Anulli,F
AU  - Aoki,M
AU  - Aparisi,Pozo JA
AU  - Aparo,MA
AU  - Aperio,Bella L
AU  - Araujo,Ferraz V
AU  - Araujo,Pereira R
AU  - Arcangeletti,C
AU  - Arce,ATH
AU  - Arduh,FA
AU  - Arguin,J-F
AU  - Argyropoulos,S
AU  - Arling,J-H
AU  - Armbruster,AJ
AU  - Armstrong,A
AU  - Arnaez,O
AU  - Arnold,H
AU  - Tame,ZPA
AU  - Artoni,G
AU  - Artz,S
AU  - Asai,S
AU  - Asawatavonvanich,T
AU  - Asbah,N
AU  - Asimakopoulou,EM
AU  - Asquith,L
AU  - Assahsah,J
AU  - Assamagan,K
AU  - Astalos,R
AU  - Atkin,RJ
AU  - Atkinson,M
AU  - Atlay,NB
AU  - Atmani,H
AU  - Augsten,K
AU  - Avolio,G
AU  - Ayoub,MK
AU  - Azuelos,G
AU  - Bachacou,H
AU  - Bachas,K
AU  - Backes,M
AU  - Backman,F
AU  - Bagnaia,P
AU  - Bahmani,M
AU  - Bahrasemani,H
AU  - Bailey,AJ
AU  - Bailey,VR
AU  - Baines,JT
AU  - Bakalis,C
AU  - Baker,OK
AU  - Bakker,PJ
AU  - Gupta,DB
AU  - Balaji,S
AU  - Baldin,EM
AU  - Balek,P
AU  - Balli,F
AU  - Balunas,WK
AU  - Balz,J
AU  - Banas,E
AU  - Bandieramonte,M
AU  - Bandyopadhyay,A
AU  - Banerjee,S
AU  - Barak,L
AU  - Barbe,WM
AU  - Barberio,EL
AU  - Barberis,D
AU  - Barbero,M
AU  - Barbour,G
AU  - Barillari,T
AU  - Barisits,M-S
AU  - Barkeloo,J
AU  - Barklow,T
AU  - Barnea,R
AU  - Barnett,BM
AU  - Barnett,RM
AU  - Barnovska-Blenessy,Z
AU  - Baroncelli,A
AU  - Barone,G
AU  - Barr,AJ
AU  - Bar
DO  - 10.1007/JHEP08(2020)051
EP  - 67
PY  - 2020///
SN  - 1029-8479
SP  - 1
TI  - Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at root s=8 TeV
T2  - The Journal of High Energy Physics
UR  - http://dx.doi.org/10.1007/JHEP08(2020)051
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000562898300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://link.springer.com/article/10.1007%2FJHEP08%282020%29051
UR  - http://hdl.handle.net/10044/1/82897
VL  - 2020
ER  -

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